As of August 2026, a typical 7 kW home solar system in Tennessee costs about $21,000 to $23,500 before incentives, roughly $3.00 to $3.35 per watt. With the 30% federal credit now ended and no statewide net metering, payback often runs 15 to 20 plus years here, so how much power you use during the day, and the quote you sign, matter more than anywhere else.
Tennessee is a low electricity-rate state with strong sun, which sounds ideal for solar. The catch is how you get paid for the power your panels send back to the grid. Tennessee has no statewide net-metering law, the 30% federal homeowner credit has ended, and the local buy-back for exports is well below the retail rate. That combination makes the honest payback longer than in high-rate, full-credit states, and it makes the price you pay and how much solar you actually use at home the two levers that decide whether it is worth it. For the broader picture, see our Tennessee solar guide. This page walks through real Tennessee cost and payback math, sourced, and points you to our Solar by State directory for other states.
How much do solar panels cost in Tennessee in 2026?
A typical 7 kW residential system runs about $21,000 to $23,500 before incentives, or roughly $3.00 to $3.35 per watt.
That is the installed price for panels, inverter, racking, permitting, and labor, and it lines up with 2026 Tennessee pricing tracked by independent sources (SolarReviews, Tennessee, 2026; EnergySage, Tennessee). Your real number depends on system size, roof complexity, panel and inverter brand, and whether you add a battery. Because Tennessee’s export credit is low, most installers here size a system to your own usage rather than oversizing it, which keeps the price closer to the low end.
| System size | Estimated cost before incentives (at $3.00 to $3.35/W) | Good fit for |
|---|---|---|
| 5 kW | About $15,000 to $16,750 | Smaller homes, lower bills |
| 7 kW | About $21,000 to $23,500 | The typical Tennessee single-family home |
| 10 kW | About $30,000 to $33,500 | Larger homes, higher usage, or EV charging |
| Source | Per-watt range from SolarReviews and EnergySage (2026). Verify with itemized local quotes. | |
These are planning estimates, not a quote. Prices move with equipment choices and installer, so the only way to pin your Tennessee solar panel cost is to compare a few itemized bids for the same system size. For how we build these figures, see our data sources and how we research each page.
What does a Tennessee system actually produce, and save?
About 9,369 kWh a year for a 7 kW system in Nashville, which offsets roughly $1,356 of power at Tennessee’s low retail rate.
According to MySolarFY’s analysis (August 2026), a typical 7 kW system in Nashville (ZIP 37201) produces about 9,369 kWh a year, which at Tennessee’s 14.47 cents per kWh residential rate offsets roughly $1,356 of electricity when you use that power at home (production modeled with NREL PVWatts; rate from the EIA Electric Power Monthly, May 2026). Tennessee’s rate is well below the U.S. residential average of about 18.44 cents per kWh, which is good for your bill but means each kWh of solar is worth a little less here than in a high-rate state.
| Figure | Value | Source |
|---|---|---|
| Tennessee residential rate | 14.47 cents per kWh (as of May 2026) | EIA |
| 7 kW production, Nashville | About 9,369 kWh per year | NREL PVWatts (ZIP 37201) |
| Full-offset value at retail | About $1,356 per year | MySolarFY calculation (production x rate) |
One important caveat: that $1,356 is the value only if you use every kWh your panels make. Without net metering, power you export earns much less, so real savings depend on how much solar you consume as it is produced. More on that next.
Why is solar payback longer in Tennessee?
Three things stretch the payback: no state net metering, a below-retail buy-back, and the 30% federal credit that ended on December 31, 2025. In a full-retail net-metering state, every exported kWh is worth the same as one you use. Tennessee does not work that way, and that is the single biggest reason payback here runs longer. Here is what is going on, point by point.
- No statewide net metering. Tennessee has no law requiring utilities to credit rooftop exports at the retail rate (DSIRE, Tennessee; NCSL net-metering policies). Compare that with how net metering credits your solar exports in states that require it.
- TVA buys exports at avoided cost. Most Tennessee homes are served through the Tennessee Valley Authority and its local power companies. TVA compensates residential export through avoided-cost style programs rather than full retail net metering, so exported power is worth noticeably less than a kWh you use at home (TVA Connect Your Power). Terms vary by local power company, so verify your exact export credit with your provider before you size a system.
- The 30% federal credit has ended. The federal Residential Clean Energy Credit (Section 25D) ended for systems placed in service after December 31, 2025, so a Tennessee homeowner installing in 2026 cannot claim that 30% credit (IRS). That removes several thousand dollars that used to shorten payback. See what the federal solar tax credit change means in 2026.
- Low retail rates cut both ways. Cheap power is great, but it means each kWh of solar you offset saves a little less, so the bill you are shrinking is smaller to begin with.
What the math looks like. Take a 7 kW system near the middle of the range, about $22,000, with no federal credit for a 2026 install because the 30% credit ended December 31, 2025. If you self-consume most of your production and save on the order of $1,000 to $1,150 a year, simple payback lands around 15 to 20 plus years, before considering rate increases or a battery. Push self-consumption higher, or land a lower per-watt price, and it improves; export a lot at the low buy-back rate and it stretches. This is why sizing to your own usage, and shopping the price hard, matter so much in Tennessee. To weigh the whole picture, read the financial case for whether solar panels are worth it and how solar lowers your electricity bill.
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What Tennessee solar incentives still apply in 2026?
The federal credit is gone, but a state property-tax rule and utility programs can still help. Tennessee has no state solar income-tax credit and no residential solar sales-tax exemption that we could confirm, so the incentive picture is thinner than in many states. The items below are the ones worth checking; verify each against the primary source and your own tax and utility situation.
| Program | What to know (verify) |
|---|---|
| Federal Residential Clean Energy Credit (25D) | Ended for systems placed in service after December 31, 2025; not available for a 2026 install (IRS) |
| Tennessee green-energy property-tax rule | Tennessee assesses qualifying solar property at 12.5% of its installed cost for property-tax purposes, which limits how much solar adds to your tax bill. Confirm eligibility and current terms (DSIRE) |
| TVA / local power company export credit | Export compensation is set through TVA programs and your local power company, generally below the retail rate. Ask your provider for its current residential export terms (TVA) |
| State income-tax credit / sales-tax exemption | No residential solar income-tax credit or sales-tax exemption confirmed for Tennessee homeowners (DSIRE) |
Because the incentive picture is thin and export credit is low, price is your biggest lever in Tennessee. For the full national picture, see the solar incentives that still apply in 2026.
Is solar still worth it in Tennessee?
It can be, if you go in with clear eyes. Solar in Tennessee is a long-horizon purchase in 2026: the sun is good, the panels will produce, and your bill will drop, but the payback is longer than in net-metering states because exports pay little and the federal credit has ended. The homeowners who do best here buy a right-sized system at a competitive price, use most of their power during the day, and treat the savings as a slow, steady return rather than a quick win. If that matches how you think about a 20-year home investment, it is worth getting quotes. If you were counting on a fast payback from generous credits, Tennessee’s math will feel slower, and that is exactly the reality to weigh before you sign.
Frequently asked questions
How much do solar panels cost in Tennessee in 2026?
A typical 7 kW home system costs about $21,000 to $23,500 before incentives, roughly $3.00 to $3.35 per watt, based on 2026 Tennessee pricing from SolarReviews and EnergySage. A 5 kW system runs closer to $15,000 to $16,750, and a 10 kW system about $30,000 to $33,500. Your final Tennessee solar panel cost depends on roof, equipment, and installer, so compare a few itemized quotes for the same size.
Does Tennessee have net metering?
No. Tennessee has no statewide net-metering law that credits rooftop exports at the full retail rate. Most homes are served through the Tennessee Valley Authority and local power companies, which compensate exported solar at an avoided-cost style rate that is below retail. That is why sizing a system to the power you use at home, rather than to maximize exports, is the smart move in Tennessee.
What is the payback period for solar in Tennessee?
For a roughly $22,000 7 kW system with no federal credit for a 2026 install (the 30% credit ended December 31, 2025), simple payback often lands around 15 to 20 plus years, depending on how much solar you self-consume and the price you pay. It is longer than in high-rate net-metering states because Tennessee exports earn little and retail rates are low. Higher self-consumption or a lower per-watt price shortens it; heavy exporting stretches it.
Is the 30% federal solar tax credit gone for a 2026 Tennessee install?
Yes. The federal Residential Clean Energy Credit (Section 25D) ended for expenditures made after December 31, 2025, so a Tennessee homeowner who installs solar in 2026 cannot claim that 30% federal credit. Some state rules, like Tennessee’s green-energy property-tax assessment, and utility export programs may still help. MySolarFY does not give tax advice; confirm your situation with a tax professional.
Does TVA pay you for solar in Tennessee?
TVA and its local power companies do compensate residential solar exports, but through avoided-cost style programs rather than full retail net metering, so you earn less per exported kWh than the retail rate you pay. Terms and any current enrollment options vary by local power company, so ask your provider for its exact residential export credit before you decide on system size.
Sources and methodology
Electricity rate from the U.S. Energy Information Administration (residential, May 2026). Production modeled with NREL PVWatts for ZIP 37201. Cost ranges from SolarReviews and EnergySage (2026). Policy and incentive details from DSIRE, NCSL, and TVA. Federal tax-credit status, the 25D credit that ended December 31, 2025, from the IRS. This page was updated for 2026 and reviewed by the MySolarFY team; see our data and methodology.
Disclaimer: MySolarFY is a free matching service, not an installer, financing company, tax advisor, or government program. Figures are planning estimates for 2026 and vary by home, utility, and installer. Lease and PPA offers can include an annual price escalator, and over the full term total payments may exceed paying cash; with a lease or PPA you do not get any tax credit because you do not own the system. Verify rates, incentives, and export terms with the primary sources and your utility before you buy.
